I am currently using two computers on my desktop, one main computer and a laptop on the side working as a extra monitor, I control it via Mouse without Borders.
I am mostly using a headset when I am in front of the computer so to get the sounds of both computers in the headset I went looking for a solution. Initially I thought I would need some kind of virtual sound-card and then stream it to the other, it was much simpler than that.
I found SoundIt in the Chrome Web Store. It shares your audio via an easy to get to web site. After installing it I start it from the Apps in Chrome, setup to share my screen and open the URL I get on the other computers. That’s it! Sound it!
I have most of the time had a multi-monitor setup and when I recently got rid of one of the monitors I started using my laptop as an additional screen to keep documentation on. This works quite well but it gets it gets a bit work to constantly switch keyboard and mouse to control the laptop.
There is a solution for this, a KVM switch. I have not had the best of experience of neither hardware nor software switches. They must have improved since the last time so I started looking for what was available.
I went through the usual suspects; Synergy, Multiplicity and ShareMouse. While some offered free versions (that I did not really qualify for) they all seemed to have improved over the years.
During my quest for the optimal software KVM for me I stumbled across Mouse without Borders. It set it up on my desktop and laptop and it has been working great for more than a day! 🙂
If you are using only Windows (10 in my case) on your computers it will probably get you started and if you notice you are missing a feature some of the commercial solutions may be a better option.